<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form name="punchout_form" method="post"
      action="https://openapi-sandbox.dl.alipaydev.com/gateway.do?charset=utf-8&method=alipay.trade.page.pay&sign=sIYYhsORui%2BPmRusRzNlfVXOp98qnvFOr8pbYK8EJ1lLc6kp3j%2BL3U5vkPhbjvIFxkd7B75iDhGFNoXdr%2FIr31rB1cSxQ29yEECoVjDvB2CcOCrY3%2BHHkVcOnn%2F0Rsw0CTFogtbGSmbw872CQ8O08aIeBSvN%2FhDg7JNMlQOZXOAKmnsCd0DgeN33FYfoqLPqKWTxn84OIDL7keohY9mN22OO3VUV0PpURy6Fg1l7zlJ1rZFmw6JTYgg8OifhVWrQ%2BeRc%2Bo1WBKIxPKgXn1Uuu0%2FUQ8brmnGkyimQFxi%2FkUS%2F1KR2f7VqQkr3JgfkrTtopmqQOG9EHWfS%2F7MCXKv2zQ%3D%3D&return_url=https%3A%2F%2Fwww.baidu.com&notify_url=http%3A%2F%2Fsyxayv.natappfree.cc%2Fapi%2Fv1%2Falipay%2Falipay_notify_url&version=1.0&app_id=9021000135616191&sign_type=RSA2&timestamp=2025-04-06+15%3A02%3A01&alipay_sdk=alipay-sdk-java-4.38.157.ALL&format=json">
    <input type="hidden" name="biz_content"
           value="{&quot;out_trade_no&quot;:&quot;0821524269850354&quot;,&quot;total_amount&quot;:&quot;1.68&quot;,&quot;subject&quot;:&quot;测试商品&quot;,&quot;product_code&quot;:&quot;FAST_INSTANT_TRADE_PAY&quot;}">
    <input type="submit" value="立即支付" style="display:none">
</form>
<script>document.forms[0].submit();</script>
</body>
</html>